Cryptocurrency

Understand what crypto is, how blockchain works, and how to approach digital assets with appropriate caution.

Cryptocurrency is a digital or virtual currency that uses cryptography for security and operates on a decentralised network — typically a blockchain. Bitcoin, launched in 2009, was the first. Today there are thousands of cryptocurrencies. They represent a genuinely new asset class, but also one of the most volatile and speculative investments available.

How Blockchain Works

A blockchain is a distributed ledger — a record of transactions maintained simultaneously across thousands of computers. No single entity controls it, making it resistant to censorship or manipulation.

Transactions are grouped into "blocks" and chained together cryptographically
Every participant has a copy of the entire chain — altering history requires changing all copies simultaneously
Consensus mechanisms (Proof of Work, Proof of Stake) determine how new blocks are validated
Bitcoin uses Proof of Work (mining); Ethereum switched to Proof of Stake in 2022

Major Cryptocurrencies

The cryptocurrency market is dominated by a handful of assets with genuine use cases, alongside thousands of speculative tokens.

Bitcoin (BTC): Digital gold — limited supply of 21 million, store of value narrative
Ethereum (ETH): Programmable blockchain — smart contracts, DeFi, NFTs run on it
Stablecoins (USDC, USDT): Pegged to the US dollar — useful for transactions, not investment
Altcoins (SOL, BNB, XRP etc): Higher risk, higher speculative potential, often highly correlated to BTC

Risks Every Investor Must Understand

Cryptocurrency carries risks that do not exist in traditional markets. These are not theoretical — they have materialised repeatedly.

Extreme volatility: Bitcoin has dropped 80%+ multiple times; altcoins have gone to zero
Regulatory risk: India introduced 30% flat tax on crypto gains + 1% TDS in 2022; rules evolve constantly
Exchange risk: FTX, a top-5 exchange, collapsed in 2022 — $8 billion in customer funds lost
Scam prevalence: $11.36 billion lost to crypto scams globally in 2024
No consumer protection: Unlike banks, there is no government guarantee or recourse

How to Approach Crypto Responsibly

For those who choose to allocate to crypto, position sizing and security are the most important considerations.

Limit allocation to 1-5% of total portfolio — only money you can afford to lose entirely
Stick to Bitcoin and Ethereum — they have the longest track records and deepest liquidity
Use regulated exchanges: CoinDCX, WazirX (India); Coinbase, Kraken (US)
Move large holdings to a hardware wallet (Ledger, Trezor) — not your keys, not your coins
Never invest borrowed money, retirement savings, or emergency funds in crypto

⚠️ Important: Do not invest in any cryptocurrency because of social media hype, celebrity endorsements, or promises of guaranteed returns. These are the most reliable markers of scams.

Key Takeaways

✓Crypto is a high-risk, speculative asset class — position-size accordingly (1-5% max)
✓Bitcoin and Ethereum have the best risk-adjusted profiles among cryptocurrencies
✓India taxes crypto gains at a flat 30% with 1% TDS — factor this into return calculations
✓Never keep large amounts on exchanges — withdraw to self-custody hardware wallets
✓Most altcoins have no lasting value — focus on assets with genuine use cases